What is Atomic_flag in C++?

Within the atomics library, you’ll find the Atomic_flag, which is a boolean atomic flag. Unlike std::atomic, Atomic_flag is guaranteed to be lock-free and lacks explicit load or store operations. On the other hand, std::atomic types provide synchronization and enforce order constraints on the program’s execution. If you want to explore more about  What is Atomic_flag in C++? take a look at this blog.